2 * Copyright (C) 2007-2008 Advanced Micro Devices, Inc.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published
7 * by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 #ifndef __LINUX_IOMMU_H
20 #define __LINUX_IOMMU_H
22 #include <linux/scatterlist.h>
23 #include <linux/device.h>
24 #include <linux/types.h>
25 #include <linux/errno.h>
26 #include <linux/err.h>
29 #define IOMMU_READ (1 << 0)
30 #define IOMMU_WRITE (1 << 1)
31 #define IOMMU_CACHE (1 << 2) /* DMA cache coherency */
32 #define IOMMU_NOEXEC (1 << 3)
33 #define IOMMU_MMIO (1 << 4) /* e.g. things like MSI doorbells */
35 * Where the bus hardware includes a privilege level as part of its access type
36 * markings, and certain devices are capable of issuing transactions marked as
37 * either 'supervisor' or 'user', the IOMMU_PRIV flag requests that the other
38 * given permission flags only apply to accesses at the higher privilege level,
39 * and that unprivileged transactions should have as little access as possible.
40 * This would usually imply the same permissions as kernel mappings on the CPU,
41 * if the IOMMU page table format is equivalent.
43 #define IOMMU_PRIV (1 << 5)
50 struct notifier_block;
53 /* iommu fault flags */
54 #define IOMMU_FAULT_READ 0x0
55 #define IOMMU_FAULT_WRITE 0x1
57 typedef int (*iommu_fault_handler_t)(struct iommu_domain *,
58 struct device *, unsigned long, int, void *);
59 typedef int (*iommu_mm_exit_handler_t)(struct device *dev, struct iommu_sva *,
62 struct iommu_domain_geometry {
63 dma_addr_t aperture_start; /* First address that can be mapped */
64 dma_addr_t aperture_end; /* Last address that can be mapped */
65 bool force_aperture; /* DMA only allowed in mappable range? */
68 /* Domain feature flags */
69 #define __IOMMU_DOMAIN_PAGING (1U << 0) /* Support for iommu_map/unmap */
70 #define __IOMMU_DOMAIN_DMA_API (1U << 1) /* Domain for use in DMA-API
72 #define __IOMMU_DOMAIN_PT (1U << 2) /* Domain is identity mapped */
75 * This are the possible domain-types
77 * IOMMU_DOMAIN_BLOCKED - All DMA is blocked, can be used to isolate
79 * IOMMU_DOMAIN_IDENTITY - DMA addresses are system physical addresses
80 * IOMMU_DOMAIN_UNMANAGED - DMA mappings managed by IOMMU-API user, used
82 * IOMMU_DOMAIN_DMA - Internally used for DMA-API implementations.
83 * This flag allows IOMMU drivers to implement
84 * certain optimizations for these domains
86 #define IOMMU_DOMAIN_BLOCKED (0U)
87 #define IOMMU_DOMAIN_IDENTITY (__IOMMU_DOMAIN_PT)
88 #define IOMMU_DOMAIN_UNMANAGED (__IOMMU_DOMAIN_PAGING)
89 #define IOMMU_DOMAIN_DMA (__IOMMU_DOMAIN_PAGING | \
90 __IOMMU_DOMAIN_DMA_API)
94 const struct iommu_ops *ops;
95 unsigned long pgsize_bitmap; /* Bitmap of page sizes in use */
96 iommu_fault_handler_t handler;
98 struct iommu_domain_geometry geometry;
103 IOMMU_CAP_CACHE_COHERENCY, /* IOMMU can enforce cache coherent DMA
105 IOMMU_CAP_INTR_REMAP, /* IOMMU supports interrupt isolation */
106 IOMMU_CAP_NOEXEC, /* IOMMU_NOEXEC flag */
110 * Following constraints are specifc to FSL_PAMUV1:
111 * -aperture must be power of 2, and naturally aligned
112 * -number of windows must be power of 2, and address space size
113 * of each window is determined by aperture size / # of windows
114 * -the actual size of the mapped region of a window must be power
115 * of 2 starting with 4KB and physical address must be naturally
117 * DOMAIN_ATTR_FSL_PAMUV1 corresponds to the above mentioned contraints.
118 * The caller can invoke iommu_domain_get_attr to check if the underlying
119 * iommu implementation supports these constraints.
123 DOMAIN_ATTR_GEOMETRY,
126 DOMAIN_ATTR_FSL_PAMU_STASH,
127 DOMAIN_ATTR_FSL_PAMU_ENABLE,
128 DOMAIN_ATTR_FSL_PAMUV1,
129 DOMAIN_ATTR_NESTING, /* two stages of translation */
130 DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE,
134 /* These are the possible reserved region types */
135 enum iommu_resv_type {
136 /* Memory regions which must be mapped 1:1 at all times */
138 /* Arbitrary "never map this or give it to a device" address ranges */
140 /* Hardware MSI region (untranslated) */
142 /* Software-managed MSI translation window */
147 * struct iommu_resv_region - descriptor for a reserved memory region
148 * @list: Linked list pointers
149 * @start: System physical start address of the region
150 * @length: Length of the region in bytes
151 * @prot: IOMMU Protection flags (READ/WRITE/...)
152 * @type: Type of the reserved region
154 struct iommu_resv_region {
155 struct list_head list;
159 enum iommu_resv_type type;
162 /* Per device IOMMU features */
163 enum iommu_dev_features {
164 IOMMU_DEV_FEAT_AUX, /* Aux-domain feature */
165 IOMMU_DEV_FEAT_SVA, /* Shared Virtual Addresses */
168 #define IOMMU_PASID_INVALID (-1U)
171 * struct iommu_sva_ops - device driver callbacks for an SVA context
173 * @mm_exit: called when the mm is about to be torn down by exit_mmap. After
174 * @mm_exit returns, the device must not issue any more transaction
175 * with the PASID given as argument.
177 * The @mm_exit handler is allowed to sleep. Be careful about the
178 * locks taken in @mm_exit, because they might lead to deadlocks if
179 * they are also held when dropping references to the mm. Consider the
180 * following call chain:
181 * mutex_lock(A); mmput(mm) -> exit_mm() -> @mm_exit() -> mutex_lock(A)
182 * Using mmput_async() prevents this scenario.
185 struct iommu_sva_ops {
186 iommu_mm_exit_handler_t mm_exit;
189 #ifdef CONFIG_IOMMU_API
192 * struct iommu_ops - iommu ops and capabilities
193 * @capable: check capability
194 * @domain_alloc: allocate iommu domain
195 * @domain_free: free iommu domain
196 * @attach_dev: attach device to an iommu domain
197 * @detach_dev: detach device from an iommu domain
198 * @map: map a physically contiguous memory region to an iommu domain
199 * @unmap: unmap a physically contiguous memory region from an iommu domain
200 * @flush_iotlb_all: Synchronously flush all hardware TLBs for this domain
201 * @iotlb_range_add: Add a given iova range to the flush queue for this domain
202 * @iotlb_sync_map: Sync mappings created recently using @map to the hardware
203 * @iotlb_sync: Flush all queued ranges from the hardware TLBs and empty flush
205 * @iova_to_phys: translate iova to physical address
206 * @add_device: add device to iommu grouping
207 * @remove_device: remove device from iommu grouping
208 * @device_group: find iommu group for a particular device
209 * @domain_get_attr: Query domain attributes
210 * @domain_set_attr: Change domain attributes
211 * @get_resv_regions: Request list of reserved regions for a device
212 * @put_resv_regions: Free list of reserved regions for a device
213 * @apply_resv_region: Temporary helper call-back for iova reserved ranges
214 * @domain_window_enable: Configure and enable a particular window for a domain
215 * @domain_window_disable: Disable a particular window for a domain
216 * @of_xlate: add OF master IDs to iommu grouping
217 * @is_attach_deferred: Check if domain attach should be deferred from iommu
218 * driver init to device driver init (default no)
219 * @dev_has/enable/disable_feat: per device entries to check/enable/disable
220 * iommu specific features.
221 * @dev_feat_enabled: check enabled feature
222 * @aux_attach/detach_dev: aux-domain specific attach/detach entries.
223 * @aux_get_pasid: get the pasid given an aux-domain
224 * @sva_bind: Bind process address space to device
225 * @sva_unbind: Unbind process address space from device
226 * @sva_get_pasid: Get PASID associated to a SVA handle
227 * @pgsize_bitmap: bitmap of all possible supported page sizes
230 bool (*capable)(enum iommu_cap);
232 /* Domain allocation and freeing by the iommu driver */
233 struct iommu_domain *(*domain_alloc)(unsigned iommu_domain_type);
234 void (*domain_free)(struct iommu_domain *);
236 int (*attach_dev)(struct iommu_domain *domain, struct device *dev);
237 void (*detach_dev)(struct iommu_domain *domain, struct device *dev);
238 int (*map)(struct iommu_domain *domain, unsigned long iova,
239 phys_addr_t paddr, size_t size, int prot);
240 size_t (*unmap)(struct iommu_domain *domain, unsigned long iova,
242 void (*flush_iotlb_all)(struct iommu_domain *domain);
243 void (*iotlb_range_add)(struct iommu_domain *domain,
244 unsigned long iova, size_t size);
245 void (*iotlb_sync_map)(struct iommu_domain *domain);
246 void (*iotlb_sync)(struct iommu_domain *domain);
247 phys_addr_t (*iova_to_phys)(struct iommu_domain *domain, dma_addr_t iova);
248 int (*add_device)(struct device *dev);
249 void (*remove_device)(struct device *dev);
250 struct iommu_group *(*device_group)(struct device *dev);
251 int (*domain_get_attr)(struct iommu_domain *domain,
252 enum iommu_attr attr, void *data);
253 int (*domain_set_attr)(struct iommu_domain *domain,
254 enum iommu_attr attr, void *data);
256 /* Request/Free a list of reserved regions for a device */
257 void (*get_resv_regions)(struct device *dev, struct list_head *list);
258 void (*put_resv_regions)(struct device *dev, struct list_head *list);
259 void (*apply_resv_region)(struct device *dev,
260 struct iommu_domain *domain,
261 struct iommu_resv_region *region);
263 /* Window handling functions */
264 int (*domain_window_enable)(struct iommu_domain *domain, u32 wnd_nr,
265 phys_addr_t paddr, u64 size, int prot);
266 void (*domain_window_disable)(struct iommu_domain *domain, u32 wnd_nr);
268 int (*of_xlate)(struct device *dev, struct of_phandle_args *args);
269 bool (*is_attach_deferred)(struct iommu_domain *domain, struct device *dev);
271 /* Per device IOMMU features */
272 bool (*dev_has_feat)(struct device *dev, enum iommu_dev_features f);
273 bool (*dev_feat_enabled)(struct device *dev, enum iommu_dev_features f);
274 int (*dev_enable_feat)(struct device *dev, enum iommu_dev_features f);
275 int (*dev_disable_feat)(struct device *dev, enum iommu_dev_features f);
277 /* Aux-domain specific attach/detach entries */
278 int (*aux_attach_dev)(struct iommu_domain *domain, struct device *dev);
279 void (*aux_detach_dev)(struct iommu_domain *domain, struct device *dev);
280 int (*aux_get_pasid)(struct iommu_domain *domain, struct device *dev);
282 struct iommu_sva *(*sva_bind)(struct device *dev, struct mm_struct *mm,
284 void (*sva_unbind)(struct iommu_sva *handle);
285 int (*sva_get_pasid)(struct iommu_sva *handle);
287 unsigned long pgsize_bitmap;
291 * struct iommu_device - IOMMU core representation of one IOMMU hardware
293 * @list: Used by the iommu-core to keep a list of registered iommus
294 * @ops: iommu-ops for talking to this iommu
295 * @dev: struct device for sysfs handling
297 struct iommu_device {
298 struct list_head list;
299 const struct iommu_ops *ops;
300 struct fwnode_handle *fwnode;
304 int iommu_device_register(struct iommu_device *iommu);
305 void iommu_device_unregister(struct iommu_device *iommu);
306 int iommu_device_sysfs_add(struct iommu_device *iommu,
307 struct device *parent,
308 const struct attribute_group **groups,
309 const char *fmt, ...) __printf(4, 5);
310 void iommu_device_sysfs_remove(struct iommu_device *iommu);
311 int iommu_device_link(struct iommu_device *iommu, struct device *link);
312 void iommu_device_unlink(struct iommu_device *iommu, struct device *link);
314 static inline void iommu_device_set_ops(struct iommu_device *iommu,
315 const struct iommu_ops *ops)
320 static inline void iommu_device_set_fwnode(struct iommu_device *iommu,
321 struct fwnode_handle *fwnode)
323 iommu->fwnode = fwnode;
326 static inline struct iommu_device *dev_to_iommu_device(struct device *dev)
328 return (struct iommu_device *)dev_get_drvdata(dev);
331 #define IOMMU_GROUP_NOTIFY_ADD_DEVICE 1 /* Device added */
332 #define IOMMU_GROUP_NOTIFY_DEL_DEVICE 2 /* Pre Device removed */
333 #define IOMMU_GROUP_NOTIFY_BIND_DRIVER 3 /* Pre Driver bind */
334 #define IOMMU_GROUP_NOTIFY_BOUND_DRIVER 4 /* Post Driver bind */
335 #define IOMMU_GROUP_NOTIFY_UNBIND_DRIVER 5 /* Pre Driver unbind */
336 #define IOMMU_GROUP_NOTIFY_UNBOUND_DRIVER 6 /* Post Driver unbind */
338 extern int bus_set_iommu(struct bus_type *bus, const struct iommu_ops *ops);
339 extern bool iommu_present(struct bus_type *bus);
340 extern bool iommu_capable(struct bus_type *bus, enum iommu_cap cap);
341 extern struct iommu_domain *iommu_domain_alloc(struct bus_type *bus);
342 extern struct iommu_group *iommu_group_get_by_id(int id);
343 extern void iommu_domain_free(struct iommu_domain *domain);
344 extern int iommu_attach_device(struct iommu_domain *domain,
346 extern void iommu_detach_device(struct iommu_domain *domain,
348 extern struct iommu_domain *iommu_get_domain_for_dev(struct device *dev);
349 extern struct iommu_domain *iommu_get_dma_domain(struct device *dev);
350 extern int iommu_map(struct iommu_domain *domain, unsigned long iova,
351 phys_addr_t paddr, size_t size, int prot);
352 extern size_t iommu_unmap(struct iommu_domain *domain, unsigned long iova,
354 extern size_t iommu_unmap_fast(struct iommu_domain *domain,
355 unsigned long iova, size_t size);
356 extern size_t iommu_map_sg(struct iommu_domain *domain, unsigned long iova,
357 struct scatterlist *sg,unsigned int nents, int prot);
358 extern phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova);
359 extern void iommu_set_fault_handler(struct iommu_domain *domain,
360 iommu_fault_handler_t handler, void *token);
362 extern void iommu_get_resv_regions(struct device *dev, struct list_head *list);
363 extern void iommu_put_resv_regions(struct device *dev, struct list_head *list);
364 extern int iommu_request_dm_for_dev(struct device *dev);
365 extern struct iommu_resv_region *
366 iommu_alloc_resv_region(phys_addr_t start, size_t length, int prot,
367 enum iommu_resv_type type);
368 extern int iommu_get_group_resv_regions(struct iommu_group *group,
369 struct list_head *head);
371 extern int iommu_attach_group(struct iommu_domain *domain,
372 struct iommu_group *group);
373 extern void iommu_detach_group(struct iommu_domain *domain,
374 struct iommu_group *group);
375 extern struct iommu_group *iommu_group_alloc(void);
376 extern void *iommu_group_get_iommudata(struct iommu_group *group);
377 extern void iommu_group_set_iommudata(struct iommu_group *group,
379 void (*release)(void *iommu_data));
380 extern int iommu_group_set_name(struct iommu_group *group, const char *name);
381 extern int iommu_group_add_device(struct iommu_group *group,
383 extern void iommu_group_remove_device(struct device *dev);
384 extern int iommu_group_for_each_dev(struct iommu_group *group, void *data,
385 int (*fn)(struct device *, void *));
386 extern struct iommu_group *iommu_group_get(struct device *dev);
387 extern struct iommu_group *iommu_group_ref_get(struct iommu_group *group);
388 extern void iommu_group_put(struct iommu_group *group);
389 extern int iommu_group_register_notifier(struct iommu_group *group,
390 struct notifier_block *nb);
391 extern int iommu_group_unregister_notifier(struct iommu_group *group,
392 struct notifier_block *nb);
393 extern int iommu_group_id(struct iommu_group *group);
394 extern struct iommu_group *iommu_group_get_for_dev(struct device *dev);
395 extern struct iommu_domain *iommu_group_default_domain(struct iommu_group *);
397 extern int iommu_domain_get_attr(struct iommu_domain *domain, enum iommu_attr,
399 extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr,
402 /* Window handling function prototypes */
403 extern int iommu_domain_window_enable(struct iommu_domain *domain, u32 wnd_nr,
404 phys_addr_t offset, u64 size,
406 extern void iommu_domain_window_disable(struct iommu_domain *domain, u32 wnd_nr);
408 extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev,
409 unsigned long iova, int flags);
411 static inline void iommu_flush_tlb_all(struct iommu_domain *domain)
413 if (domain->ops->flush_iotlb_all)
414 domain->ops->flush_iotlb_all(domain);
417 static inline void iommu_tlb_range_add(struct iommu_domain *domain,
418 unsigned long iova, size_t size)
420 if (domain->ops->iotlb_range_add)
421 domain->ops->iotlb_range_add(domain, iova, size);
424 static inline void iommu_tlb_sync(struct iommu_domain *domain)
426 if (domain->ops->iotlb_sync)
427 domain->ops->iotlb_sync(domain);
430 /* PCI device grouping function */
431 extern struct iommu_group *pci_device_group(struct device *dev);
432 /* Generic device grouping function */
433 extern struct iommu_group *generic_device_group(struct device *dev);
434 /* FSL-MC device grouping function */
435 struct iommu_group *fsl_mc_device_group(struct device *dev);
438 * struct iommu_fwspec - per-device IOMMU instance data
439 * @ops: ops for this device's IOMMU
440 * @iommu_fwnode: firmware handle for this device's IOMMU
441 * @iommu_priv: IOMMU driver private data for this device
442 * @num_ids: number of associated device IDs
443 * @ids: IDs which this device may present to the IOMMU
445 struct iommu_fwspec {
446 const struct iommu_ops *ops;
447 struct fwnode_handle *iommu_fwnode;
450 unsigned int num_ids;
454 /* ATS is supported */
455 #define IOMMU_FWSPEC_PCI_RC_ATS (1 << 0)
458 * struct iommu_sva - handle to a device-mm bond
462 const struct iommu_sva_ops *ops;
465 int iommu_fwspec_init(struct device *dev, struct fwnode_handle *iommu_fwnode,
466 const struct iommu_ops *ops);
467 void iommu_fwspec_free(struct device *dev);
468 int iommu_fwspec_add_ids(struct device *dev, u32 *ids, int num_ids);
469 const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode);
471 static inline struct iommu_fwspec *dev_iommu_fwspec_get(struct device *dev)
473 return dev->iommu_fwspec;
476 static inline void dev_iommu_fwspec_set(struct device *dev,
477 struct iommu_fwspec *fwspec)
479 dev->iommu_fwspec = fwspec;
482 int iommu_probe_device(struct device *dev);
483 void iommu_release_device(struct device *dev);
485 bool iommu_dev_has_feature(struct device *dev, enum iommu_dev_features f);
486 int iommu_dev_enable_feature(struct device *dev, enum iommu_dev_features f);
487 int iommu_dev_disable_feature(struct device *dev, enum iommu_dev_features f);
488 bool iommu_dev_feature_enabled(struct device *dev, enum iommu_dev_features f);
489 int iommu_aux_attach_device(struct iommu_domain *domain, struct device *dev);
490 void iommu_aux_detach_device(struct iommu_domain *domain, struct device *dev);
491 int iommu_aux_get_pasid(struct iommu_domain *domain, struct device *dev);
493 struct iommu_sva *iommu_sva_bind_device(struct device *dev,
494 struct mm_struct *mm,
496 void iommu_sva_unbind_device(struct iommu_sva *handle);
497 int iommu_sva_set_ops(struct iommu_sva *handle,
498 const struct iommu_sva_ops *ops);
499 int iommu_sva_get_pasid(struct iommu_sva *handle);
501 #else /* CONFIG_IOMMU_API */
504 struct iommu_group {};
505 struct iommu_fwspec {};
506 struct iommu_device {};
508 static inline bool iommu_present(struct bus_type *bus)
513 static inline bool iommu_capable(struct bus_type *bus, enum iommu_cap cap)
518 static inline struct iommu_domain *iommu_domain_alloc(struct bus_type *bus)
523 static inline struct iommu_group *iommu_group_get_by_id(int id)
528 static inline void iommu_domain_free(struct iommu_domain *domain)
532 static inline int iommu_attach_device(struct iommu_domain *domain,
538 static inline void iommu_detach_device(struct iommu_domain *domain,
543 static inline struct iommu_domain *iommu_get_domain_for_dev(struct device *dev)
548 static inline int iommu_map(struct iommu_domain *domain, unsigned long iova,
549 phys_addr_t paddr, size_t size, int prot)
554 static inline size_t iommu_unmap(struct iommu_domain *domain,
555 unsigned long iova, size_t size)
560 static inline size_t iommu_unmap_fast(struct iommu_domain *domain,
561 unsigned long iova, int gfp_order)
566 static inline size_t iommu_map_sg(struct iommu_domain *domain,
567 unsigned long iova, struct scatterlist *sg,
568 unsigned int nents, int prot)
573 static inline void iommu_flush_tlb_all(struct iommu_domain *domain)
577 static inline void iommu_tlb_range_add(struct iommu_domain *domain,
578 unsigned long iova, size_t size)
582 static inline void iommu_tlb_sync(struct iommu_domain *domain)
586 static inline int iommu_domain_window_enable(struct iommu_domain *domain,
587 u32 wnd_nr, phys_addr_t paddr,
593 static inline void iommu_domain_window_disable(struct iommu_domain *domain,
598 static inline phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova)
603 static inline void iommu_set_fault_handler(struct iommu_domain *domain,
604 iommu_fault_handler_t handler, void *token)
608 static inline void iommu_get_resv_regions(struct device *dev,
609 struct list_head *list)
613 static inline void iommu_put_resv_regions(struct device *dev,
614 struct list_head *list)
618 static inline int iommu_get_group_resv_regions(struct iommu_group *group,
619 struct list_head *head)
624 static inline int iommu_request_dm_for_dev(struct device *dev)
629 static inline int iommu_attach_group(struct iommu_domain *domain,
630 struct iommu_group *group)
635 static inline void iommu_detach_group(struct iommu_domain *domain,
636 struct iommu_group *group)
640 static inline struct iommu_group *iommu_group_alloc(void)
642 return ERR_PTR(-ENODEV);
645 static inline void *iommu_group_get_iommudata(struct iommu_group *group)
650 static inline void iommu_group_set_iommudata(struct iommu_group *group,
652 void (*release)(void *iommu_data))
656 static inline int iommu_group_set_name(struct iommu_group *group,
662 static inline int iommu_group_add_device(struct iommu_group *group,
668 static inline void iommu_group_remove_device(struct device *dev)
672 static inline int iommu_group_for_each_dev(struct iommu_group *group,
674 int (*fn)(struct device *, void *))
679 static inline struct iommu_group *iommu_group_get(struct device *dev)
684 static inline void iommu_group_put(struct iommu_group *group)
688 static inline int iommu_group_register_notifier(struct iommu_group *group,
689 struct notifier_block *nb)
694 static inline int iommu_group_unregister_notifier(struct iommu_group *group,
695 struct notifier_block *nb)
700 static inline int iommu_group_id(struct iommu_group *group)
705 static inline int iommu_domain_get_attr(struct iommu_domain *domain,
706 enum iommu_attr attr, void *data)
711 static inline int iommu_domain_set_attr(struct iommu_domain *domain,
712 enum iommu_attr attr, void *data)
717 static inline int iommu_device_register(struct iommu_device *iommu)
722 static inline void iommu_device_set_ops(struct iommu_device *iommu,
723 const struct iommu_ops *ops)
727 static inline void iommu_device_set_fwnode(struct iommu_device *iommu,
728 struct fwnode_handle *fwnode)
732 static inline struct iommu_device *dev_to_iommu_device(struct device *dev)
737 static inline void iommu_device_unregister(struct iommu_device *iommu)
741 static inline int iommu_device_sysfs_add(struct iommu_device *iommu,
742 struct device *parent,
743 const struct attribute_group **groups,
744 const char *fmt, ...)
749 static inline void iommu_device_sysfs_remove(struct iommu_device *iommu)
753 static inline int iommu_device_link(struct device *dev, struct device *link)
758 static inline void iommu_device_unlink(struct device *dev, struct device *link)
762 static inline int iommu_fwspec_init(struct device *dev,
763 struct fwnode_handle *iommu_fwnode,
764 const struct iommu_ops *ops)
769 static inline void iommu_fwspec_free(struct device *dev)
773 static inline int iommu_fwspec_add_ids(struct device *dev, u32 *ids,
780 const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode)
786 iommu_dev_has_feature(struct device *dev, enum iommu_dev_features feat)
792 iommu_dev_feature_enabled(struct device *dev, enum iommu_dev_features feat)
798 iommu_dev_enable_feature(struct device *dev, enum iommu_dev_features feat)
804 iommu_dev_disable_feature(struct device *dev, enum iommu_dev_features feat)
810 iommu_aux_attach_device(struct iommu_domain *domain, struct device *dev)
816 iommu_aux_detach_device(struct iommu_domain *domain, struct device *dev)
821 iommu_aux_get_pasid(struct iommu_domain *domain, struct device *dev)
826 static inline struct iommu_sva *
827 iommu_sva_bind_device(struct device *dev, struct mm_struct *mm, void *drvdata)
832 static inline void iommu_sva_unbind_device(struct iommu_sva *handle)
836 static inline int iommu_sva_set_ops(struct iommu_sva *handle,
837 const struct iommu_sva_ops *ops)
842 static inline int iommu_sva_get_pasid(struct iommu_sva *handle)
844 return IOMMU_PASID_INVALID;
847 #endif /* CONFIG_IOMMU_API */
849 #ifdef CONFIG_IOMMU_DEBUGFS
850 extern struct dentry *iommu_debugfs_dir;
851 void iommu_debugfs_setup(void);
853 static inline void iommu_debugfs_setup(void) {}
856 #endif /* __LINUX_IOMMU_H */